.headimg{
    width:7.5rem;
    height:3.1rem;
    display: block;
}
form{
    margin-top: 0.5rem;
    width:7.5rem;
    height:auto;
}

.l1{
    width:7.5rem;
    height:1rem;
    line-height:0.8rem;
    font-size: 0.36rem;
}
.label{
    float: left;
    width:2.3rem;
    height:0.64rem;
    line-height:0.64rem;
    padding-right: 0.25rem;
    text-align: right;
    font-size: 0.32rem;
}
.l1 input{
    float: left;
    width:4.2rem;
    height:0.64rem;
    border: 0.02rem solid blue;
    text-indent: 0.16rem;
}

.btn{
    margin:0.5rem auto;
    width:5.4rem;
    height:1.6rem;
}
.submit{
    width: 5.4rem;
    height:0.8rem;
    background-color: red;
    color: #ffffff;
    line-height:0.8rem;
    font-size: 0.32rem;
    border-radius: 0.1rem;
    margin-bottom: 0.4rem;
}
.reg{
    display: block;
    font-size: 0.32rem;
    color: blue;
}

.help-block{
    margin-left:2.55rem;
    font-size: 0.24rem;
    color: red;
}